Well strainer



Sept. 1, 1931. J. H. McEvoY,V .IRl A' WELL STRAINER Filed Aug. 1, 1930 Patented Sept. 1 1931 i i -UNITED'STATES PATENT OFFICE:l

JOSEPH HENRY MCEVOY, JR., F HOUSTON, TEXAS WELLJSTRAINER Application filed August 1, 1930. Serial `1\To..472,463.

My invention relates to well strainers for The openings 3 in .the pipe are normally use particularly in deep wells for filtering made in rows extending longitudinally of impurities 'from oil, water or other iiuid the pipe and spaced equal distances apart. coming into the pipe. The plates 4 will be formed with strainer 5 It is an object of the invention to provide openings 5 therein to register with the open- 55 a well strainerrwhich is particularly strong ings in the pipe. The said'openings may and durable in its construction and econombe slots` extending .longitudinally of the `ical to manufacture. It is desired to form pipe, as shown at the upper end of Fig. 1, a straining member which may be secured in or transversely of the pipe, as shown in the position upon a perforated pipe in` such intermediatesection of Fig. 1,`or it may be 60 manner thatthe material coming into the desirable to place removable buttons in the well will be properly filtered. plate 4, as indicated in the lower section It is also an object to provide a form of of Fig. 1. screen in which the filtering member may be 'Ihe plates 4 may be made of any desired most conveniently formed in an accurate material, and it will Ibe possible to make G5 manner and at a lessened cost. them of hardened steel curved slightly in Referring to the drawings herewith, transverse section to conform to the curva- ,i wherein' the application of my invention has ture of the pipe and of suiiicient width to been shown, cover one or more of the longitudinal rows Fig. 1 is a side elevation ofa strainer of openings in the pipe. In Fig. 1 I have 70 pipe having my invention applied thereon, `shown the plates as each covering one lonpart of the view being in longitudinal secgitudinal row of the pipe openings 3. The tion, for greater clearness. sides of the adjacent plates are beveled Fig. 2 is a transverse section through the slightly, as shown at 6,-,so that when the device disclosed in Fig. 1. K adjacent plates are in position a V-shaped 7o Fig. 3 is an enlarged detail showing the groove 7 will be formed between the meetuse of a strainer button with my invention. y ing edges of the plates. In the groove thus Fig. 4 is a broken detail in transverse secformed I contemplate depositing by a blowtion showing the use of strainer plates; and torch, or other equivalent means, a bond of Fig. 5 is a lower plan view of one of the welded metal 8, thus binding each plate to S0 strainer plates. the adjacent plate in such manner that it Like numerals of reference designate like becomes in eifect one continuous sleeve about parts in all the views. the pipe. I also contemplate placing a i The pipe 1 upon which I have shown my bonding strip 9 of welded material at the invention is illustrative of an ordinary perends of the plates, as indicated particularly 85 forated pipe threaded at the end, as shown in Fig. 1, said bonding strip being tapered at 2, and having a series of spaced openings inwardly to form a beveledshoulder at the 3 cnt therein. These openings are usually ends of the' plates.V cut with a boring tool and are circular in As the plates are Separate, it will be pos- 40 shape, and are thus shown in the drawings, sible to cut the straining slots 5 within the 90 although the shape of the hole is immaterial plates by any convenient means, such as a in the use of my invention, as will clearly milling cutter, blowtorch or the slots may llpeareven be purched or cast therein during the I contemplatel forming the straining formation of the plate. The process ofcutopenings for the pipe on separate plates atting these slots will be a simple one, howtached to the pipe aroundl its periphery. ever, when the plates are off the plpe, as. These plates, indicated at 4 in the drawings, will be obvious. In case 1t 1s desired to use may extend the entire length of the strainthe button form of screening openings, the er pipe, or rather from the one threaded plates 4 may be cut with circular openings end to the other about as shown in Fig. 1. which are reamed out so as to form a shoulder toward the outer end' of the opening, as indicated in Figs. 1 and 3.-' The screening button 11 may then be forced into the opening, the outer face contacting with the shoulder 10, the opening in the plate being' 'of larger diameter than the opening 3 in the pipe. The button will be secured lirmly in position against removal at all times when the plate has been Secured to the pipe, as indicated in Fig. 3.

Where the slotted openings in the plates are cut longitudinally of the plate, the construction indicated in Figs. 4 and 5.1nay be employed and the plate 4', indicated in these views, is curved to conform to the outline l of the pipe, as in the previous embodiments,

and the inner face of the plate is formed with longitudinally cut grooves or corrugations 12. Where this plate is used, slots 5 will be cut in the plate to register with the lower troughs of the grooves, as indicated in Fig. 4. The straining openings will, therefore, have parallel sides fr a short. distance, the slots then widening out toward the center of the pipe in a manner to correspond with straining openings now sometimes employed. The plate 4 may be,

Wide` enough to cover two rows of openings in the pipe, and if desired, they may be formed in staggered relation to each other, as indicated in Fig. 5, the openings in the pipe corresponding to and registering with the slotted openings in the plate. When this type of plate is used, the welded strip 9 at the ends of the plates willrserve to close the grooves l2 in the plates, and thus prevent the passage of liquid through the openings at that point.

While I have shown and described the plates as. being secured in position by welding, it is obvious that they may be otherwise secured against removal, and I do not Wish to be confined to the exact details of construction further thanis set out in the claims hereto. A pipe formed in this manner will be much stronger than the pipe ordinarily used, and it will be possible to form the straining openings easily and economically before the plates arev placed in position and secured in place. It is believed that those skilled in the art will understand these advantages without further description.

What I claim as new and desire to pro-` tect by Letters Patent is: l

l. A well strainer comprising a pipe having perforations therein, plates fitting longitudinally of said pipe and covering said perforations, said plates being grooved longitudinally on their under sides, and having spaced groups of slotted openings therethrough adapted to allow the passage of fluid to said perforations.

2. A well strainer comprising a pipe having perforations therein, plates curved to t the outer surface of said pipe and cover said perforations, said plates being grooved -on their under sides and formed with straining slots parallel with and cutting the troughs of said grooves, each slot cutting a separate groove.

with the innersurface thereof contacting'I with said pipe, and covering said openings, said plates being grooved longitudinally on their inner faces, and formed with groups of slots therein, said slots being cut longitudinally to connect with the troughs of said grooves, and means to secure said plates to said pipe and close the ends of said grooves.

4. A well strainer comprising a pipe having regularly spaced openings therein, longitudinal plates -transversely curved to fit said pipe and having straining slots therein, means to 'secure said plates to said pipe, said plates being-formed on their inner faces to provide a plurality of iuid conducting passages connecting said openings between said plates andV said pipe.

5. A well strainer comprising a pipe having regularly spaced openings therein, longitudinal plates transversely curved to fit said pipe, and having straining slots therein, means to`secure said plates to said p`ipe, said plates being formed with a plurality of lo-ngitudinal grooves on their inner faces. to provide fluid passages between said plates and said pipe.

In testimony whereof I hereunto affix my signature this 22nd day of Jul A. 1),-1930.

JOSEPH HENRY Mo VOY, JR. 

